CN101888496B - Wireless high definition module, and transmitting module and receiving module thereof - Google Patents
Wireless high definition module, and transmitting module and receiving module thereof Download PDFInfo
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Abstract
The invention relates to a wireless high definition module, and a transmitting module and a receiving module thereof. The wireless high definition module comprises the transmitting module provided with a high definition video information source and the receiving module provided with a high definition display device, wherein the transmitting module converts high definition video and audio data in the high definition video information source into a radio signal and transmits the radio signal to the receiving module in a wireless communication mode; and the receiving module displays a high definition video. A high definition video and audio data code stream is converted into the radio signal and the radio signal can be transmitted to the receiving module through an antenna in the wireless communication mode, so that the connection of a transmission cable is reduced and image data transmission is not delayed. Automatic frequency adjustment can be further realized and automatic switch to frequency with an excellent channel can be realized under the disturbance of other radio frequency signal source equipment, so that the transmission of high definition data signals is more stable.
Description
Technical field
The present invention relates to the multimedia communication technology field, relate in particular to the transmission receive mode of high resolution video and audio data is improved.
Background technology
More and more universal along with television set, apparatus such as computer, watch movie and video programs to become requisite entertainment selection in people's life at present.And the film source of movie and video programs also from before black-and-white film develop into colored film, from analog to digital, from common film source to the high definition program, people are also increasingly high to the requirement of program.
Present television set generally can pass through the high definition STB; Realize the reception transmission and the broadcast of high definition video program; But its mode that receives the high definition data code flow generally is to adopt cable directly to connect the realization transfer of data; The high definition STB must could use under the situation that has cable to connect, and can not arbitrarily move, and it not is very convenient using.And the general expensive price of the present cable that adopts has increased use cost.
Summary of the invention
The technical problem that the present invention will solve is; Above-mentioned defective to prior art; A kind of WirelessHD module and emitting mould train thereof and reception module are provided, and it can send through communication and receive the high resolution video and audio data code flow, and shows through HD video.
The technical solution adopted for the present invention to solve the technical problems is:
Construct a kind of WirelessHD module, it comprises the emitting mould train of band HD video information source and the reception module of band high definition display device; Wherein, said emitting mould train becomes wireless signal with the high resolution video and audio data transaction in the said HD video information source, and is sent to said reception module with communication, and carries out the HD video demonstration by said reception module.
WirelessHD module of the present invention, wherein, said emitting mould train comprises high-definition signal memory module, transmitting terminal high definition standard converter, transmitting terminal baseband processing module, transmitting terminal radio frequency processing module; Wherein,
Said high-definition signal memory module; Be used to store the high resolution video and audio data; And the generation high definition is looked sound data code stream frequently; Or receive the high resolution video and audio data code flow from the outside, and said high resolution audio and video data code flow is sent to said transmitting terminal high definition standard converter through transmission line through data-interface;
Said transmitting terminal high definition standard converter is used for converting the high resolution video and audio data code flow of the different-format that receives to standard data format, and the high resolution video and audio data code flow of standard data format is sent to said transmitting terminal baseband processing module;
Said transmitting terminal baseband processing module is used for the high resolution video and audio data code flow that receives is encrypted, sealed, and is sent to said transmitting terminal radio frequency processing module through four tunnel differential data line again;
Said transmitting terminal radio frequency processing module; Be used for four road differential data flow points that said four tunnel differential data line send are not modulated to preset frequency range; Four road signals that modulate send to free space through antenna with the radio wave mode after amplifying through power amplifier respectively.
WirelessHD module of the present invention, wherein, said emitting mould train also comprises: transmitting terminal application controls microprocessor and transmitting terminal human-computer interface module; Wherein,
Said transmitting terminal application controls microprocessor through said transmitting terminal man-machine interface module emitting mould train work at present state, and receives the key-press status control command of said transmitting terminal human-computer interface module;
Said transmitting terminal human-computer interface module is used to show the emitting mould train work at present state of said transmitting terminal application controls microprocessor, and obtains outside key-press status control command, is sent to said transmitting terminal application controls microprocessor.
WirelessHD module of the present invention, wherein, said reception module comprises receiving terminal radio frequency processing module, receiving terminal baseband processing module and receiving terminal high definition standard converter; Wherein,
Said receiving terminal radio frequency processing module is used for receiving through antenna the radio signal of preset frequency range, it is carried out filtering after, be demodulated into five tunnel difference base band data code streams through demodulator circuit;
Said receiving terminal baseband processing module is used for said five tunnel difference base band data code streams are reverted to the high resolution video and audio data code flow of standard data format, the row cache of going forward side by side;
Said receiving terminal high definition standard converter is used for the high resolution video and audio data code flow of acceptance criteria data format, and is converted into the high-definition image data format that needs, and is shown by said high definition display device.
WirelessHD module of the present invention, wherein, said reception module also comprises dynamic frequency selection module, receiving terminal application controls microprocessor and receiving terminal human-computer interface module; Wherein,
Said dynamic frequency is selected module, is used to realize the Automatic Frequency adjustment;
Said receiving terminal application controls microprocessor receives module work at present state through said receiving terminal man-machine interface module, and receives the key-press status control command of said receiving terminal human-computer interface module;
Said receiving terminal human-computer interface module is used to show the emitting mould train work at present state of said receiving terminal application controls microprocessor, and obtains outside key-press status control command, is sent to said receiving terminal application controls microprocessor.
The present invention also provides a kind of emitting mould train that is used for the WirelessHD module, and wherein, said emitting mould train comprises high-definition signal memory module, transmitting terminal high definition standard converter, transmitting terminal baseband processing module, transmitting terminal radio frequency processing module; Wherein,
Said high-definition signal memory module; Be used to store the high resolution video and audio data; And the generation high definition is looked sound data code stream frequently; Or receive the high resolution video and audio data code flow from the outside, and said high resolution audio and video data code flow is sent to said transmitting terminal high definition standard converter through transmission line through data-interface;
Said transmitting terminal high definition standard converter is used for converting the high resolution video and audio data code flow of the different-format that receives to standard data format, and the high resolution video and audio data code flow of standard data format is sent to said transmitting terminal baseband processing module;
Said transmitting terminal baseband processing module is used for the high resolution video and audio data code flow that receives is encrypted, sealed, and is sent to said transmitting terminal radio frequency processing module through four tunnel differential data line again;
Said transmitting terminal radio frequency processing module; Be used for four road differential data flow points that said four tunnel differential data line send are not modulated to preset frequency range; Four road signals that modulate send to free space through antenna with the radio wave mode after amplifying through power amplifier respectively.
Emitting mould train of the present invention, wherein, said emitting mould train also comprises: transmitting terminal application controls microprocessor and transmitting terminal human-computer interface module; Wherein,
Said transmitting terminal application controls microprocessor through said transmitting terminal man-machine interface module emitting mould train work at present state, and receives the key-press status control command of said transmitting terminal human-computer interface module;
Said transmitting terminal human-computer interface module is used to show the emitting mould train work at present state of said transmitting terminal application controls microprocessor, and obtains outside key-press status control command, is sent to said transmitting terminal application controls microprocessor.
The present invention also provides a kind of reception module that is used for the WirelessHD module, and wherein, said reception module comprises receiving terminal radio frequency processing module, receiving terminal baseband processing module and receiving terminal high definition standard converter; Wherein,
Said receiving terminal radio frequency processing module is used for receiving through antenna the radio signal of preset frequency range, it is carried out filtering after, be demodulated into five tunnel difference base band data code streams through demodulator circuit;
Said receiving terminal baseband processing module is used for said five tunnel difference base band data code streams are reverted to the high resolution video and audio data code flow of standard data format, the row cache of going forward side by side;
Said receiving terminal high definition standard converter is used for the high resolution video and audio data code flow of acceptance criteria data format, and is converted into the high-definition image data format that needs, and is shown by said high definition display device.
Reception module of the present invention, wherein, said reception module also comprises dynamic frequency selection module, receiving terminal application controls microprocessor and receiving terminal human-computer interface module; Wherein,
Said dynamic frequency is selected module, is used to realize the Automatic Frequency adjustment;
Said receiving terminal application controls microprocessor receives module work at present state through said receiving terminal man-machine interface module, and receives the key-press status control command of said receiving terminal human-computer interface module;
Said receiving terminal human-computer interface module is used to show the emitting mould train work at present state of said receiving terminal application controls microprocessor, and obtains outside key-press status control command, is sent to said receiving terminal application controls microprocessor.
Reception module in the WirelessHD module of the present invention makes it can adopt communication to pass through antenna transmission to receiving module through converting the high resolution video and audio data code flow into wireless signal, reduced the connection of transmission cable, and transfer of data does not have delay.Further, increase dynamic frequency selection module, i.e. DFS detector in the module when receiving; Can realize the Automatic Frequency adjustment; When disturbed by other radiofrequency signal source device, can automatically switch on the good frequency of signal, make that the high definition data is more stable.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the WirelessHD module theory diagram of the embodiment of the invention;
Fig. 2 is the emitting mould train and the theory diagram of the WirelessHD module of the embodiment of the invention;
Fig. 3 is the reception module theory diagram of the WirelessHD module of the embodiment of the invention.
Embodiment
Below in conjunction with diagram, the preferred embodiments of the present invention are described in detail.
The WirelessHD module theory diagram of preferred embodiment of the present invention is as shown in Figure 1, consults Fig. 2 and Fig. 3 simultaneously, and it comprises the emitting mould train of band HD video information source and the reception module of band high definition display device.Wherein, emitting mould train becomes wireless signal with the high resolution video and audio data transaction in the HD video information source, and is sent to the reception module with communication, and carries out the HD video demonstration by the high definition display device that receives module.Through adopting Wireless transmission mode, the phenomenon of free of data transmission delay can be saved cable and connect, and lets the user dispose the high definition display device with the cleanest easy mode, exempts complicated puzzlement of pulling strings.Wherein the high definition display device can adopt LCD display, CRT display screen or projection display screen etc.
Further, as shown in Figure 2 in above embodiment, emitting mould train comprises high-definition signal memory module, transmitting terminal high definition standard converter, transmitting terminal baseband processing module and transmitting terminal radio frequency processing module.Wherein, high-definition signal memory module storage high resolution video and audio data, and can produce high definition and look sound data code stream frequently; Or through the appropriate data interface; As HDMI (High Definition MultimediaInterface, HDMI), Video Graphics Array (Video Graphics Array; VGA); USB etc. receive the high resolution video and audio data code flow from the outside, and through transmission line the high resolution audio and video data code flow that institute produces or receives are sent to transmitting terminal high definition standard converter.When the high resolution video and audio data code flow that produces or receive when institute is the HDMI form, need specially designed differential data transmission line.
Transmitting terminal high definition standard converter converts the high resolution video and audio data code flow of the different-format that receives to standard data format (like RGB etc.), and the high resolution video and audio data code flow of standard data format (like RGB etc.) is sent to the transmitting terminal baseband processing module.As; When the high resolution video and audio data code flow is HDMI, VGA or other form; Transmitting terminal high definition standard converter receives from the next high resolution video and audio data code flow signal of transmission line; And change forms such as its HDMI, VGA into standard data format (like RGB etc.), send to the transmitting terminal baseband processing module to these data again; When the high resolution video and audio data code flow that comes from high-definition signal source transmission was standard data format (like RGB etc.), transmitting terminal high definition standard converter directly was sent to the transmitting terminal baseband processing module with the high resolution video and audio data.
The transmitting terminal baseband processing module is encrypted the high resolution video and audio data code flow that receives, seal, and is sent to transmitting terminal radio frequency processing module through four tunnel differential data line again.And receive simultaneously from receiving the upstream data. signals that module is sent, after its demodulation, according to circumstances adjust package.
Transmitting terminal radio frequency processing module is not modulated to four road differential data flow points that four tunnel differential data line send on the preset frequency range, and like the 5-5.9GHz frequency range, bandwidth is 20MHz or 40MHz, and modulation system is OFDM.Four road signals that modulate send to free space through antenna with the radio wave mode after amplifying through power amplifier respectively.Simultaneously, transmitting terminal radio frequency processing module is also through the upward signal antenna, receives and the upstream data. signals demodulation, becomes the base band differential signal, sends the transmitting terminal baseband processing module to.
For making emitting mould train control convenient, use hommization more, as shown in Figure 2, the emitting mould train of above embodiment further comprises: transmitting terminal application controls microprocessor and transmitting terminal human-computer interface module.
Wherein, Transmitting terminal application controls microprocessor is mounted with system application; Executive utility, initialization system, and coordinate the work of whole transmission module; It is through transmitting terminal man-machine interface module emitting mould train work at present state, and the key-press status control command of reception transmitting terminal human-computer interface module.The transmitting terminal baseband processing module also responds penetrates the request that end application controls microprocessor sends, and provides current emission module state, or carries out the operation that changes delivery status.The emitting mould train work at present state of transmitting terminal man-machine interface module transmitting terminal application controls microprocessor, and obtain outside key-press status control command, be sent to transmitting terminal application controls microprocessor.
In embodiment further, as shown in Figure 3, receive module and comprise receiving terminal radio frequency processing module, receiving terminal baseband processing module and receiving terminal high definition standard converter.Wherein, receiving terminal radio frequency processing module receives the radio signal of preset frequency range through antenna, like the 5.0-5.9GHz frequency range, it is carried out filtering after, be demodulated into five tunnel difference base band data code streams through demodulator circuit.And at every frame image data transmission gap; Receiving terminal radio frequency processing module will be modulated to preset frequency range by the up differential data code stream that the transmission of receiving terminal baseband processing module comes; Like the 5.0-5.9GHz frequency range, modulation system be on-off keying (On-Off-Keying, OOK).
The receiving terminal baseband processing module will be reverted to standard data format (like RGB etc.) by five tunnel difference base band data code streams that receiving terminal radio frequency processing module transmission comes, and can be several frames of view data buffer memory, to improve the quality of images; Then send standard data format (like RGB etc.).Also analyze the view data quality of sending here simultaneously, count circuit to message through up difference then,, be transferred to WHDI RX rf processing circuitry in the picture frame gap.
The high resolution video and audio data code flow of receiving terminal high definition standard converter acceptance criteria data format (like RGB etc.), and be converted into the high-definition image data format that needs, like WHDI, VGA; And show to receiving the high definition display device through transmission line.If desired, can directly outwards export high resolution video and audio data such as WHDI, VGA through port; When the direct acceptance criteria data format (like RGB etc.) of high definition display device, then this receiving terminal high definition standard converter is by bypass.And when the high resolution video and audio data code flow is the HDMI form, need to use specially designed differential data transmission line to transmit.
For making the control of reception module convenient, use hommization more, as shown in Figure 3, receive module and also comprise dynamic frequency selection module, receiving terminal application controls microprocessor and receiving terminal human-computer interface module.In some countries and regions, require can be shared at some with other wireless devices frequency range, but other wireless devices have the use priority.Wherein, dynamic frequency is selected module, and promptly dynamic frequency is selected (DynamicFrequency Selection; DFS) detector, can be implemented in use these frequency ranges before, carry out the Automatic Frequency adjustment; Whether detecting has other wireless devices using; When disturbed by other radiofrequency signal source device, can automatically switch on the good frequency of signal, make that the high definition data is more stable.Receiving terminal application controls microprocessor is mounted with system application; Executive utility; Initialization system; And coordinate the work of whole reception module, it receives module work at present state through the receiving terminal man-machine interface module, and receives the key-press status control command of aforementioned receiving terminal human-computer interface module.
The emitting mould train work at present state of receiving terminal man-machine interface module receiving terminal application controls microprocessor, and obtain outside key-press status control command through button or other modes, be sent to receiving terminal application controls microprocessor.
In the further embodiment of the present invention, a kind of emitting mould train that is used for the WirelessHD module also is provided, its concrete theory structure can referring among the embodiment of front WirelessHD module to the description of emitting mould train, repeat no more at this.This emitting mould train can realize the reception of reception module in the above WirelessHD module and the module combination use of Presentation Function with arbitrary, is not restricted to the reception module among the above embodiment.
In another embodiment of the present invention, a kind of reception module that is used for the WirelessHD module also is provided, its concrete theory structure can referring among the embodiment of front WirelessHD module to receiving the description of module, repeat no more at this.This receives module can make up use with arbitrary module of the functions such as the storage of high resolution video and audio data code flow, conversion and transmission of emitting mould train in the above WirelessHD module of realizing, is not restricted to the emitting mould train among the above embodiment.
Need to prove; WirelessHD module described in above each embodiment of the present invention; And emitting mould train wherein is based on the wireless family digital interface with the reception module, and (the WHDI system is under less bandwidth condition for Wireless Home DigitalInterface, WHDI) technology; Through the MIMO wireless communication mode, realized the intimate real-time transmission of no compression high definition video-audio data.
Reception module in the WirelessHD module of the present invention makes it can adopt communication to pass through antenna transmission to receiving module through converting the high resolution video and audio data code flow into wireless signal, reduced the connection of transmission cable, and transfer of data does not have delay.Further, increase dynamic frequency selection module, i.e. DFS detector in the module when receiving; Can realize the Automatic Frequency adjustment; When disturbed by other radiofrequency signal source device, can automatically switch on the good frequency of signal, make that the high definition data is more stable.
WirelessHD module of the present invention can provide high-quality, not have the wireless connections of compressing for the user, can connect a plurality of audio-visual playback equipments simultaneously, like blue-ray DVD player, high definition STB or game machine etc.Therefore its image transmission range can reach 30 meters, can wireless image-sound conveyer and audio-visual playback equipment be put at home any one basically, as long as in its transmission range scope, is fit to be used for dozen high definition game machine, does not have any audio-visual delay.
Should be understood that, concerning those of ordinary skills, can improve or conversion, and all these improvement and conversion all should belong to the protection range of accompanying claims of the present invention according to above-mentioned explanation.
Claims (6)
1. a WirelessHD module is characterized in that, comprises the emitting mould train of band HD video information source and the reception module of band high definition display device; Wherein, said emitting mould train becomes wireless signal with the high resolution video and audio data transaction in the said HD video information source, and is sent to said reception module with communication, and carries out the HD video demonstration by said reception module;
Said emitting mould train comprises high-definition signal memory module, transmitting terminal high definition standard converter, transmitting terminal baseband processing module and transmitting terminal radio frequency processing module; Wherein,
Said high-definition signal memory module; Be used to store the high resolution video and audio data; And produce high definition and look the sound data code stream, or receive the high resolution video and audio data code flow from the outside through data-interface, and said high resolution audio and video data code flow is sent to said transmitting terminal high definition standard converter through transmission line;
Said transmitting terminal high definition standard converter is used for converting the high resolution video and audio data code flow of the different-format that receives to standard data format, and the high resolution video and audio data code flow of standard data format is sent to said transmitting terminal baseband processing module;
Said transmitting terminal baseband processing module is used for the high resolution video and audio data code flow that receives is encrypted, sealed, and is sent to said transmitting terminal radio frequency processing module through four tunnel differential data line again;
Said transmitting terminal radio frequency processing module; Be used for four road differential data flow points that said four tunnel differential data line send are not modulated to preset frequency range; Four road signals that modulate send to free space through antenna with the radio wave mode after amplifying through power amplifier respectively;
Said reception module comprises dynamic frequency selection module, is used to realize the Automatic Frequency adjustment.
2. WirelessHD module according to claim 1 is characterized in that, said emitting mould train also comprises: transmitting terminal application controls microprocessor and transmitting terminal human-computer interface module; Wherein,
Said transmitting terminal application controls microprocessor through said transmitting terminal man-machine interface module emitting mould train work at present state, and receives the key-press status control command of said transmitting terminal human-computer interface module;
Said transmitting terminal human-computer interface module is used to show the emitting mould train work at present state of said transmitting terminal application controls microprocessor, and obtains outside key-press status control command, is sent to said transmitting terminal application controls microprocessor.
3. WirelessHD module according to claim 1 is characterized in that, said reception module comprises receiving terminal radio frequency processing module, receiving terminal baseband processing module and receiving terminal high definition standard converter; Wherein,
Said receiving terminal radio frequency processing module is used for receiving through antenna the radio signal of preset frequency range, it is carried out filtering after, be demodulated into five tunnel difference base band data code streams through demodulator circuit;
Said receiving terminal baseband processing module is used for said five tunnel difference base band data code streams are reverted to the high resolution video and audio data code flow of standard data format, the row cache of going forward side by side;
Said receiving terminal high definition standard converter is used for the high resolution video and audio data code flow of acceptance criteria data format, and is converted into the high-definition image data format that needs, and is shown by said high definition display device.
4. WirelessHD module according to claim 3 is characterized in that, said reception module also comprises receiving terminal application controls microprocessor and receiving terminal human-computer interface module;
Wherein, said receiving terminal application controls microprocessor receives module work at present state through said receiving terminal man-machine interface module, and receives the key-press status control command of said receiving terminal human-computer interface module;
Said receiving terminal human-computer interface module is used to show the emitting mould train work at present state of said receiving terminal application controls microprocessor, and obtains outside key-press status control command, is sent to said receiving terminal application controls microprocessor.
5. emitting mould train that is used for the WirelessHD module; It is characterized in that said emitting mould train comprises high-definition signal memory module, transmitting terminal high definition standard converter, transmitting terminal baseband processing module, transmitting terminal radio frequency processing module, transmitting terminal application controls microprocessor and transmitting terminal human-computer interface module; Wherein,
Said high-definition signal memory module; Be used to store the high resolution video and audio data; And produce high definition and look the sound data code stream, or receive the high resolution video and audio data code flow from the outside through data-interface, and said high resolution audio and video data code flow is sent to said transmitting terminal high definition standard converter through transmission line;
Said transmitting terminal high definition standard converter is used for converting the high resolution video and audio data code flow of the different-format that receives to standard data format, and the high resolution video and audio data code flow of standard data format is sent to said transmitting terminal baseband processing module;
Said transmitting terminal baseband processing module is used for the high resolution video and audio data code flow that receives is encrypted, sealed, and is sent to said transmitting terminal radio frequency processing module through four tunnel differential data line again;
Said transmitting terminal radio frequency processing module; Be used for four road differential data flow points that said four tunnel differential data line send are not modulated to preset frequency range; Four road signals that modulate send to free space through antenna with the radio wave mode after amplifying through power amplifier respectively;
Said transmitting terminal application controls microprocessor through said transmitting terminal man-machine interface module emitting mould train work at present state, and receives the key-press status control command of said transmitting terminal human-computer interface module;
Said transmitting terminal human-computer interface module is used to show the emitting mould train work at present state of said transmitting terminal application controls microprocessor, and obtains outside key-press status control command, is sent to said transmitting terminal application controls microprocessor.
6. reception module that is used for the WirelessHD module; It is characterized in that said reception module comprises receiving terminal radio frequency processing module, receiving terminal baseband processing module, receiving terminal high definition standard converter, dynamic frequency selection module, receiving terminal application controls microprocessor and receiving terminal human-computer interface module; Wherein,
Said receiving terminal radio frequency processing module is used for receiving through antenna the radio signal of preset frequency range, it is carried out filtering after, be demodulated into five tunnel difference base band data code streams through demodulator circuit;
Said receiving terminal baseband processing module is used for said five tunnel difference base band data code streams are reverted to the high resolution video and audio data code flow of standard data format, the row cache of going forward side by side;
Said receiving terminal high definition standard converter is used for the high resolution video and audio data code flow of acceptance criteria data format, and is converted into the high-definition image data format that needs, and is shown by the high definition display device;
Said dynamic frequency is selected module, is used to realize the Automatic Frequency adjustment;
Said receiving terminal application controls microprocessor receives module work at present state through said receiving terminal man-machine interface module, and receives the key-press status control command of said receiving terminal human-computer interface module;
Said receiving terminal human-computer interface module is used to show the emitting mould train work at present state of said receiving terminal application controls microprocessor, and obtains outside key-press status control command, is sent to said receiving terminal application controls microprocessor.
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| CN103067698B (en) * | 2012-12-18 | 2015-09-09 | 上海师范大学 | Based on broadband wireless multiple spot image and voice transmission method and the system thereof of 2.4G |
| CN103037207A (en) * | 2012-12-18 | 2013-04-10 | 珠海市百音电子科技有限公司 | Wireless high definition audio video transmission module and wireless mobile high definition audio video transmission system |
| CN103905071B (en) * | 2012-12-26 | 2016-04-27 | 联想(北京)有限公司 | A kind of radio system anti-disturbance method and device, electronic equipment |
| WO2015006971A1 (en) * | 2013-07-19 | 2015-01-22 | 深圳市视晶无线技术有限公司 | Shooting system |
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